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公开(公告)号：US2848543A
公开(公告)日：1958-08-19
申请号：US46310254
申请日：1954-10-19
Applicant: BELL TELEPHONE LABOR INC
Inventor： BREED ROLLAND N , ORFEO CESAREO , GERMANTON CHARLES E , ROBERTS ROBERT W , WEBER LAURANCE A , WINGARDNER CHARLES A
IPC: H04M15/38
CPC classification number: H04M15/38
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